Monday, February 28, 2011

Windows Azure SDK Refresh released

I noticed it a little late, but Microsoft released a refresh of the Windows Azure November 2010 SDK(1.3). I still want to mention it because it solves a security issue with the Windows Azure Software Development Kit (SDK).  I strongly encourage you to install the refresh of the SDK and redeploy your application(s).

Who is affected?

This issue affects applications developed using ASP.NET and using the new "Full IIS" feature of SDK v1.3 that have a Web Role deployed.

In particular, this affects web sites and services that use cookies to maintain state information either within a session or between sessions (if interactions in one session can affect what happens in a subsequent session). These cookies are cryptographically protected so that clients can see that there is state information being passed but cannot see the contents of that state information and cannot change it. In the case of vulnerable Web Roles, it may be possible for clients to determine the contents of the state information (though the client could still not change it). If the web site depended on the client not being able to see the contents, its security could be compromised.

Applying the fix

To apply the fix:

1.     Download and install the refresh of the November 2010 Tools and SDK (recommended).

2.     To upgrade just the SDK, use this link (64 bit) or this link (32 bit)

After you've applied the fix, you'll have to re-package your service and then upgrade or re-deploy your service in the cloud.

Verifying the fix

To verify the fix has been applied:

1.     Check the version number of 'Windows Azure SDK' after upgrading to this refresh, as displayed under 'Programs and Features.' It should be 1.3.20121.1237.

No comments: